COMPUTING Attempt ALL questions in this section. 1. State one benefit of networking computers. 2. Explain the difference between storing data in RAM and storing data on backing storage. 3. Name the part of the processor responsible for carrying out calculations. 4. Name the software that controls the process of saving files to disk. 5. Name one optical storage medium that allows the user to save files but not delete them. 6. Name an input device which is built into a palmtop computer. 7. Each character on the keyboard has its own ASCII code. The ASCII code for one of the control characters is 13. ( a ) Convert the decimal number 13 into a binary number. ( b ) Describe the function of œcontrol characters. 8. Explain the purpose of the analysis stage in the software development process. 9. State one advantage of writing programs in a high level language rather than in machine code. 10. Name the stage of the software development process at which the user interface is created. 11. Complete the following complex condition that displays a message œSlow Down for cars whose speed is over 30, but below 35. IF _________________________________THEN display œSlow Down. 12. A hospital uses a program to store the length of time each person waits to see a doctor. The program reports the longest waiting time. State which one of the following standard algorithms the program would use: Input validation Find maximum Find minimum Count occurrences Linear search 13. Name the type of loop that a program would use to implement an input validation algorithm. ] Attempt ALL questions in this section. 14. Marek is writing a program to calculate the average weekly rainfall. The design for this program can be represented as follows: ( a ) (i) Name the design notation that has been used above. (ii) Name and describe a graphical design notation. ( b ) Steps 2 and 5 are the beginning and the end of a fixed loop . Explain why a œfixed loop is being used here. ( c ) Marek uses an editor at the implementation stage of the software development process. (i) State the purpose of an œeditor at the implementation stage. (ii) State where the program is stored before it is saved to backing storage. ( d ) Describe two methods that Marek could use to ensure that his code is readable. ( ) The program calculates the average rainfall for one week as 18 . 6 mm. Describe how floating point representation is used to represent real numbers. SECTION II 1. set total to zero 2. loop 7 times 3. get day’s rainfall from user 4. add rainfall to total 5. end loop 6. calculate average rainfall 7. display average rainfall 15. The estate agent PropertyPlus has a catalogue of local properties for sale. A sample page from the catalogue is shown below. ( a ) From this sample page, identify one object and one operation that may have been carried out on the object. ( b ) The image of the house measures 3 inches by 4 inches and has a resolution of 600 dpi. Calculate the storage requirements for the photograph in kilobytes . Show all working . ( c ) The photograph was taken using a digital camera. The camera was connected to a computer system through an interface . State one function of an œinterface. ( d ) State one reason why the estate agent might choose a laser printer rather than an inkjet printer to print the catalogue. ( ) PropertyPlus makes its catalogue available on-line. (i) Name the type of software that is required to access this catalogue on-line. (ii) State an appropriate type of software for protecting a computer system while accessing the Internet. ( f ) Name the legislation that requires PropertyPlus to protect information held on customers. PropertyPlus Price Location Rooms Garden Parking £120,000 East Kirkness 2 bedrooms, living room, family kitchen, dining room, bathroom Front and rear garden Off street parking Property 1 of 65